Mr. Davis has 15 students in his class. He wants to send 3 of his students to pick up books for the class. How many different combinations of students can he choose?

A. 45

B. 2730

C. 455

D. 210

A test driver has to drive a car on a 1-mile track for two rounds in a way, that his average speed is 60 mph. On his first round his average speed is 40 mph. How fast does he need to drive, to get the right speed average?

Kayla brought six fancy pens for a total of $18 how much did the pen cost

George has $23 to spend on art supplies. He wants to buy markers, paper, and glue. If the total cost of the markers and paper is more than $14, Which inequality represents the dollar amount, g, George can spend on glue?

what is the largest whole number that can round up or down to 500 if we where rounding to the nearest hundred

Explain the steps for writing 0.000000001in scientific notation.

Are Triangles really real?

A mountain bike wheel has a diameter of 26 in. What is the approximate circumference of the wheel? Use pi star times = 3.14. Express your final answer to the nearest hundredth.

6 (3x+6) - (2x) what can be the answer to that equation

Simplify: 3 (2x+-10) - 8

For numbers 10a-10b use place value to find the product 3x600=3*_hundreds